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authorSuman Anna <s-anna@ti.com>2017-05-18 17:09:00 -0500
committerBjorn Andersson <bjorn.andersson@linaro.org>2017-06-25 14:00:00 -0700
commit470ac62fe557b905324ccecb3a20ad686672d22e (patch)
tree77a9467f7dac06674e50978daeb027fc575f80ee /drivers/remoteproc
parentc51e882cd711abfa11e29f46cd7a73ce41ba1cf4 (diff)
remoteproc/davinci: simplify the reset function
The reset_assert() function is used to make sure the DSP remote processor is in a reset state regardless of its previous state. The driver relies on davinci_clk_reset_{assert,deassert}() functions for reset management which take in a clock parameter. The assert_reset() performs a clk_get()/clk_put() cycle to acquire the clock handle to use with this function. This is totally unnecessary and the code can be simplified to use the clock acquired during probe and directly use the reset functions, so simplify this logic. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
-rw-r--r--drivers/remoteproc/da8xx_remoteproc.c23
1 files changed, 3 insertions, 20 deletions
diff --git a/drivers/remoteproc/da8xx_remoteproc.c b/drivers/remoteproc/da8xx_remoteproc.c
index 3814de28599c..fcd3cecb4967 100644
--- a/drivers/remoteproc/da8xx_remoteproc.c
+++ b/drivers/remoteproc/da8xx_remoteproc.c
@@ -157,22 +157,6 @@ static const struct rproc_ops da8xx_rproc_ops = {
.kick = da8xx_rproc_kick,
};
-static int reset_assert(struct device *dev)
-{
- struct clk *dsp_clk;
-
- dsp_clk = clk_get(dev, NULL);
- if (IS_ERR(dsp_clk)) {
- dev_err(dev, "clk_get error: %ld\n", PTR_ERR(dsp_clk));
- return PTR_ERR(dsp_clk);
- }
-
- davinci_clk_reset_assert(dsp_clk);
- clk_put(dsp_clk);
-
- return 0;
-}
-
static int da8xx_rproc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -223,6 +207,7 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
drproc = rproc->priv;
drproc->rproc = rproc;
+ drproc->dsp_clk = dsp_clk;
rproc->has_iommu = false;
platform_set_drvdata(pdev, rproc);
@@ -241,7 +226,7 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
* *not* in reset, but da8xx_rproc_start() needs the DSP to be
* held in reset at the time it is called.
*/
- ret = reset_assert(dev);
+ ret = davinci_clk_reset_assert(drproc->dsp_clk);
if (ret)
goto free_rproc;
@@ -250,7 +235,6 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
drproc->ack_fxn = irq_data->chip->irq_ack;
drproc->irq_data = irq_data;
drproc->irq = irq;
- drproc->dsp_clk = dsp_clk;
ret = rproc_add(rproc);
if (ret) {
@@ -268,7 +252,6 @@ free_rproc:
static int da8xx_rproc_remove(struct platform_device *pdev)
{
- struct device *dev = &pdev->dev;
struct rproc *rproc = platform_get_drvdata(pdev);
struct da8xx_rproc *drproc = (struct da8xx_rproc *)rproc->priv;
@@ -280,7 +263,7 @@ static int da8xx_rproc_remove(struct platform_device *pdev)
* Without the reset, the DSP can lockup permanently when it
* begins executing garbage.
*/
- reset_assert(dev);
+ davinci_clk_reset_assert(drproc->dsp_clk);
/*
* The devm subsystem might end up releasing things before

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